Cryptography And Network Security Forouzan Solution. Do you want to know how to encrypt data without using public-key cryptography? When you’re looking for ways to secure a file or communication, oftentimes you’ll hear someone say they are using public/private keys to encrypt files. What does this mean exactly?
Public key cryptography is the way to go when securing sensitive information such as credit card numbers or email passwords. Private key cryptography uses asymmetric algorithms to encrypt messages. In comparison, symmetric encryption uses a single secret key to encrypt and decrypt messages.
Most people don’t get it because although they may be able to understand the concept of private and public keys, they don’t realize the difference between them.
Public Key Cryptography and Symmetric Encryption are two different types of encryption that are often mistaken for being the same. This article will help you understand how they work together, how they are different, and how you can use them to encrypt and decrypt files.
Public Key Cryptography vs. Symmetric Encryption
Symmetric encryption is what people think of when they hear the term encryption; it is a way to scramble data so that it is only readable by the intended receiver. Symmetric key cryptography uses a single shared key, usually, a string of numbers or a password, to encrypt and decrypt messages.
This encryption method is useful for large corporations to military forces to secure their data, including emails and text messages.
How They Work Together
Public key cryptography uses two keys instead of one; a public key and a private key. If you have sensitive information such as account info or credit card numbers that you need to encrypt, this is the way to go.
When using public-key cryptography, the sender uses the recipient’s public key to encrypt the data or message, but due to the nature of asymmetric algorithms, the only way to decrypt it is with the corresponding private key. In other words, if you want your information to be secure and unreadable then public-key cryptography is the best.
Different Types Of Keys
There are two main types of keys in asymmetric algorithms: Public keys and private keys. The main difference between them is that one can encrypt a file but not decrypt it (public), while the other can decrypt it but not encrypt it (private).
However, there are some other differences between them you should know about as well:
1) Private keys only exist on the device they generated on; if you want to send someone a file then you’ll have to share your private key with them so they can decrypt it
2) Private keys can be more secure by increasing their length
3) It takes much more computational power to crack encrypted data with a private key than it does with a public one
4) Public keys are safer because they can be distributed freely. But private keys are more secure because they are never shared with anyone else
What is Network Security Forouzan Solution?
Cryptography And Network Security Forouzan Solution
The term network security refers to a set of systems and methods designed to protect computers, data and networks from threats such as hackers and viruses. Network security concepts are based on cryptography, secure network design, secure protocols and architecture.
Network security is a branch of information security that focuses on defending computer networks. Information security is the protected administration of technology and the safeguarding of information regardless of its medium.